caracal-core 0.1.0

Economic control plane for AI agents

Caracal Core

Economic control plane for AI agents.

Overview

Caracal Core is an open-source economic infrastructure layer for AI agents that provides:

• Economic Identity: Unique identifiers for agents with ownership metadata
• Budget Policies: Spending limits with time-based constraints
• Policy Enforcement: Fail-closed budget checks before agent execution
• Immutable Ledger: Append-only audit trail of all spending events
• Metering: Resource usage tracking with cost calculation

Installation

Using uv (recommended)

# Create virtual environment
uv venv

# Activate virtual environment
source .venv/bin/activate  # On Unix/macOS
# or
.venv\Scripts\activate  # On Windows

# Install Caracal Core
uv pip install -e .

# Install with development dependencies
uv pip install -e ".[dev]"

Using pip

pip install caracal-core

Quick Start

Initialize Caracal

caracal init

This creates the ~/.caracal/ directory with default configuration.

Register an Agent

caracal agent register --name "my-agent" --owner "[e-mail]"

Create a Budget Policy

caracal policy create --agent-id <agent-id> --limit 100.00 --window daily

Use the SDK

from caracal.sdk.client import CaracalClient

client = CaracalClient()

# Budget check context manager
with client.budget_check(agent_id="my-agent"):
    # Your agent code here
    result = call_expensive_api()

# Emit metering event
client.emit_event(
    agent_id="my-agent",
    resource_type="openai.gpt4.input_tokens",
    quantity=1000
)

Query the Ledger

# Query by agent
caracal ledger query --agent-id <agent-id>

# Query by date range
caracal ledger query --start 2024-01-01 --end 2024-01-31

# Get spending summary
caracal ledger summary --agent-id <agent-id>

Development

Running Tests

# Run all tests
pytest

# Run unit tests only
pytest tests/unit/

# Run property-based tests
pytest tests/property/ -m property

# Run with coverage
pytest --cov=caracal --cov-report=html

Code Quality

# Format code
black caracal/ tests/

# Lint code
ruff caracal/ tests/

# Type checking
mypy caracal/

Architecture

Caracal Core follows a modular architecture:

• caracal.core: Core primitives (identity, policy, ledger, metering)
• caracal.sdk: Python SDK for agent integration
• caracal.cli: Command-line interface
• caracal.config: Configuration management

Requirements

• Python 3.10+
• Dependencies: click, pyyaml, hypothesis, ase-protocol

License

Apache License 2.0 - See LICENSE file for details.

Contributing

Contributions are welcome! Please see CONTRIBUTING.md for guidelines.